CVE-2021-4294

mediumpriority · track · 24EPSS 0.007 · 53 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.69% (53rd) EPSS

CVSS 5.9 · medium

Is it mine?

6 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

A vulnerability was found in OpenShift OSIN. It has been classified as problematic. This affects the function ClientSecretMatches/CheckClientSecret. The manipulation of the argument secret leads to observable timing discrepancy. The name of the patch is 8612686d6dda34ae9ef6b5a974e4b7accb4fea29. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216987.

cvss

Technical severity, 0–10. One row per scoring source.

5.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.6–5.9

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 3.6

v3.12.6lowCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.12.6lowCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:Nsecondary · cna@vuldb.comexploitability 1.2 · impact 1.4

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · OSV

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-203USCWE-208USCWE-208US

affected products (6)

Products and version ranges known to be affected.

Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
OpenShift OSIN≤ n/aenisa_euvdEU
redhat openshift container platform= 4.0nvdUScpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*
redhat openshift osin= 1.0.0nvdUScpe:2.3:a:redhat:openshift_osin:*:*:*:*:*:*:*:*
redhat openshift osin= 1.0.1nvdUScpe:2.3:a:redhat:openshift_osin:*:*:*:*:*:*:*:*
Go github.com/openshift/osin< 1.0.2-0.20210113124101-8612686d6ddaosvUSpkg:golang/github.com/openshift/osin

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1019Red Hat OpenShift: Mehrere SchwachstellenDeutsch2024-05-02csaf · cert_bundDE
Ein entfernter Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um Informationen offenzulegen oder um Sicherheitsmaßnahmen zu umgehen.
GHSA-m7qp-cj9p-gj85OpenShift OSIN vulnerable to Observable Timing Discrepancy2022-12-28ghsa · osvUS
A vulnerability was found in OpenShift OSIN. It has been classified as problematic. This affects the function `ClientSecretMatches/CheckClientSecret`. The manipulation of the argument secret leads to observable timing discrepancy. The name of the patch is 8612686d6dda34ae9ef6b5a974e4b7accb4fea29. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216987.
GO-2022-1201Timing attack in github.com/openshift/osin2023-01-03vendor · osvUS
Client secret checks are vulnerable to timing attacks, which could permit an attacker to determine client secrets.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2022-12-28modified 2026-06-17

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+882 more

references (14)

External citations — patches, advisories, analysis.

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